Corrected: 324 AWHP 309 AWTQ (lb-ft) in 4th gear on Mustang Dyno... The transmission would shift at 6800rpm though... Temperature was ~79F (fairly "warm" - ~26C) Car Specs: 2011 Audi (B8) S4 7 speed DSG (dual clutch transmission) 3.0 V6 Supercharged Misc specs: Ran in "Dynamic" mode and ASR turned off... (Dynamic mode is the "sport mode" where shifts are done way faster, revs held higher, and throttle/steering is super sensitive/precise) (ASR = Traction Control) RS4 19inch wheels with Michelin PS2 (255/35/R19) - if this matters Pump gas (92 octane with "up to" 10% ethanol crapola) Mods: APR 93 Octane ECU Flash APR RSC Catback (free flowing 3 inch exhaust - downpipes and back - since the cats are right after the exhaust headers) APR Stage II Carbonio Cold Air Intake This was done as a "modded" baseline since I'm getting a smaller supercharger pulley installed next week (and accompanying ECU tune). Mustang dynos "typically" read lower than the "average" dynojet dynos. Mustang dynos use road resistance and are therefore 10-12% lower than Dynojet readings. Keep in mind, these are WHEEL horsepower. Manufacturers usually quote CRANK horsepower. Full res dyno sheet: https://picasaweb.google.com/psykhotik/2011AudiS4#5624611191902111794 Video (lol why not): Comparison with a bone stock B8 S4: The "baseline" is my buddy's car (DSG too). Curious on the "lead" he has on me down low. I'm probably guessing due to lighter wheels (he has 18 inch wheels - I have 19s - a good 6 lbs per corner more)
Wow.. Except at the beginning, there sure is a significant boost to the torque throughout the rest of the range.
Despite the rounder torque curve, there's a lot of power gain, and still maintains at higher end. Looks like the mapping is better for track.
Yeah, APR developed/tested the tune on their S4 race car. I have no complaints on with it on the track though (309 ft-lb/409Nm). The baseline is my friend's car (not my stock baseline - regrettably I never did one). It must be his lighter wheels (less "loss" putting power down) that cause the spike down low or something. Usually people quote ~15% Drive Train Loss to figure out the crank power when the car is on dynapack/dynojet. 25% on mustang dyno I suppose. IDK. Crank HP to me is quite irrelevant...
